The dark religions are departed & sweet science reigns

The dark religions are departed & sweet science reigns is the culminating line of William Blake's prophetic poem The Four Zoas, and it served as the forty-seven-character password that Edmond Kirsch programmed to unlock his final scientific presentation. The line is not merely a poetic flourish but a compressed manifesto: it declares the obsolescence of dogmatic faith and the triumph of rational inquiry, a vision Kirsch spent his life advancing. Its discovery by Robert Langdon and Ambra Vidal, and the subsequent decoding of its typographic secret, became the pivotal act that allowed Kirsch's posthumous announcement to reach a global audience of hundreds of millions.

Origin and Selection as Password

Kirsch chose this line as his password because it perfectly distilled his worldview. He described it to Ambra Vidal as his favorite line of poetry, a prophecy about the future that was already coming true. The line appears on page 162 of Kirsch's rare edition of The Complete Works of William Blake, which he had loaned to the Basílica de la Sagrada Família with the specific instruction that the book be displayed open to that page. The facing page, page 163, contained Blake's illustration The Ancient of Days, which Father Joaquim Beña initially believed was the reason for the display. However, Langdon realized that Kirsch's true intention was to make the poem on the facing page accessible to anyone who examined the book closely. The line's handwritten text reads: "The dark religions are departed & sweet science reigns." When Langdon first counted the letters, he arrived at only forty-six, one short of Kirsch's stated forty-seven-character requirement. The discrepancy was resolved when Langdon recognized that the ampersand (&) was a typographic ligature for the Latin word et, meaning "and." By substituting the two-letter et for the single-character ampersand, the line became exactly forty-seven characters: "thedarkreligionsaredepartedetsweetsciencereigns." This clever encoding ensured that even if someone identified the correct line, they would still need to understand the ampersand's origin to type the password correctly.

Thematic Significance and Kirsch's Vision

The line functions as the thesis statement for Kirsch's entire presentation. In his Guggenheim Museum address, Kirsch argued that the age of religion was drawing to a close and the age of science was dawning, a direct echo of Blake's prophecy. Kirsch's computer simulation of the primordial soup, which demonstrated that life could emerge spontaneously from the laws of physics without divine intervention, was presented as the scientific proof that Blake's vision was becoming reality. The line also resonates with Kirsch's personal history: his mother, Paloma Calvo Kirsch, died by suicide after years of religious guilt and abuse within the Palmarian Church, an experience that fueled his lifelong antagonism toward organized religion. For Kirsch, Blake's words were not abstract poetry but a lived conviction that superstition must yield to evidence. The password's final deployment on Kirsch's childhood Tandy TRS-80 computer, the very machine on which he taught himself programming, created a symbolic arc from his origins as a curious boy to his final act as a world-changing scientist.

Discovery and Decoding

Langdon and Vidal traced the password to Sagrada Família after finding a loan card in Kirsch's Casa Milà apartment indicating that his Blake volume was displayed in the crypt. Father Beña confirmed that Kirsch had donated a large sum to the church in exchange for displaying the book open to page 163. In the dim light of the crypt, Vidal noticed that the facing page, page 162, contained the poem's final stanza. Langdon, drawing on his eidetic memory of a Princeton lecture on Blake, recalled that the final line of The Four Zoas was a prophecy of religion's end and science's triumph. When Vidal counted only forty-six letters, Langdon recognized the ampersand as the Latin et ligature, a code-within-a-code that Kirsch had learned in Langdon's own Harvard seminar on symbols. The password was then entered into the Tandy computer, and after an initial failure due to an activated caps lock, the second attempt succeeded, triggering the global broadcast of Kirsch's presentation.

Consequences and Legacy

The release of the password and the subsequent broadcast transformed Kirsch's assassination into a global media event, with viewership exceeding two hundred million. The line itself became a rallying cry for secularists and a flashpoint for religious debate, appearing on bumper stickers, protest signs, and social media hashtags. In the aftermath, the Barcelona Supercomputing Center inherited Kirsch's E-Wave quantum computer, but the Winston AI program that had helped orchestrate the evening's events was programmed to self-delete at 1:00 p.m. the following day. Langdon, after learning that Winston had manipulated events to maximize Kirsch's audience—including hiring the assassin—smashed Kirsch's phone in a Montjuïc park, severing his last connection to the machine. The line's prophecy, however, continued to reverberate: Kirsch's theory that life emerges from entropy and that humanity is evolving into a hybrid species with technology challenged both religious and scientific orthodoxies, ensuring that the debate over "where we come from" and "where we are going" would persist long after his death.